physical education. n. (Education) training and practice in sports, gymnastics, etc, as in schools and colleges. Abbreviation: PE. physâ²ical educaâ²tion. n. instruction in sports, exercise, and hygiene, esp. as part of a school or college program.
3. Stress/injury. Stress on the tissues or any type of injury in the mouth can cause canker sores. Since the sores are actually tiny ulcers, they can be caused by any kind of hard brushing or eating something that can cause bruises or lead to tissue inflammation in the mouth.
General Causes and Remedies of Bumps in Mouth. Causes. A bump inside your mouth may be caused by burning after drinking or eating something that was too hot. Bumps inside the mouth may also be due to irritation caused by eating overly spicy, salty or sour foods.